In the current study, three adolescents with autism spectrum disorder and moderate intellectual disability were first taught to independently use an iPad to access instructional material (i.e., video models) via electronic books or eBooks. After iPad training, participants were required to apply their newly acquired skills to independently operate the iPad and eBooks to learn and perform other novel daily living tasks. The study employed a single case, non-concurrent multiple baseline design across participants during the iPad training phase and across tasks for each participant during the application phase. Results based on visual analysis indicated that all participants learned to independently operate the iPad and access instructional materials presented via eBooks. Furthermore, they applied these skills to learn and independently perform other novel daily living tasks. Effect size estimates using between case standardized mean difference showed improvements in responding subsequent to iPad training.
This study compared a picture exchange (PE) system and an iPad®-based speech generating device (SGD) when teaching requesting skills to preschoolers with developmental disabilities and limited functional speech. A multiple baseline design with counterbalancing the order of two instruction conditions across participants was applied to compare the acquisition rate, followed by a concurrent operant arrangement to examine participants’ preference for these two augmentative and alternative communication (AAC) systems. Discrimination of two picture symbols presented via the priority AAC system was also probed using a concurrent operant arrangement. Results indicated that two of three participants required less sessions to reach mastery for the iPad®-based instruction condition. All participants showed a clear preference for the iPad®-based SGD and were able to discriminate between two picture symbols presented simultaneously on the iPad®-based SGD when making requests. This study highlights practice implications in terms of describing a systematic approach that could be employed when identifying a priority AAC system for learners with developmental disabilities and limited functional speech.
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